Cochlear implant encoding method based on cochlear auditory nonlinear dynamics mechanism

Abstract

The invention discloses a cochlear implant encoding method based on a cochlear auditory nonlinear dynamics mechanism. The method comprises the steps that 1, a cochlear nonlinear dynamics model is built; 2, a nonlinear cochlear array is built, wherein the nonlinear cochlear array comprises n active simulation modules with different natural frequencies, each active simulation module conducts corresponding operation on a received input voice signal, and a real-time response output signal of each active simulation module is obtained; 3, the real-time response output signals of all the active simulation modules are subjected to rectification and lowpass filtering, and then an amplitude envelope is obtained, and the frequencies and the amplitude envelope are converted into pulse signals to be transmitted to the corresponding electrodes. Accordingly, by means of the cochlear nonlinear dynamics model, an acoustical signal obtained after processing can show the nonlinear dynamic range compression effect similar to cochlea processing results and generate a combination tone related to a tone, and then the problem that a traditional cochlear implant is small in dynamic range and difficult in tone information transmission is solved.

Description

technical field [0001] The invention belongs to the field of biomedical engineering, and more specifically relates to an electronic cochlear encoding method based on the nonlinear dynamic mechanism of cochlear hearing. Background technique [0002] As an important information channel for human beings to communicate with the outside world, hearing is an important way for human beings to survive and develop and perceive the world. However, a large number of people in the world live in a silent world due to various reasons. According to the statistics of the World Health Organization, there are currently 360 million people in the world who suffer from deafness or hearing impairment, accounting for 5% of the total number of people in the world. The vast majority of patients with profound deafness cannot convert the sound signal into an electrical signal that is transmitted to the auditory nerve so that they can feel the sound information. Cochlear Electronics is a human implant...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a cochlear electronic coding method based on the nonlinear dynamic mechanism of cochlear hearing, aiming at solving the problems of small dynamic range and difficult tone information transmission using the traditional cochlear simulation calculation method. question

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